C-reactive protein levels were also elevated in the AAA group as compared to the control group in patients with either negative or positive IgG antibody titres as follows: for negative IgG titres: 421 mg/L versus 172 mg/L (P = 0.003), and positive IgG titres: 390 mg/L versus 183 mg/L (P = 0.0001). This evidence concerns the gene CRP and triple-A syndrome.